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RT5002 데이터시트(PDF) 28 Page - Richtek Technology Corporation

부품명 RT5002
상세설명  7 1 Channel DC/DC PMU with Li-Ion Battery Charger for DSC
PDF  40 Pages
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제조업체  RICHTEK [Richtek Technology Corporation]
홈페이지  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT5002 데이터시트(HTML) 28 Page - Richtek Technology Corporation

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RT5002
28
DS5002-00
November 2011
www.richtek.com
Charger State
Bit EOC
Bit PGOOD
Bit SAFE
Charging
0
1
0
Charging Suspended by Thermal Loop
0
1
0
Safety Timers Expired
0
1
1
Charging Done
1
1
0
Recharging after Termination
1
1
0
IC Disabled or no Valid Input Power
0
0
0
Charge State
Wake-Up Detector
Wake-Up Detector detects VINor BAT plug-in events. Once
one of them plug-in, WAKE pin asserts one 55ms-width
high pulse. The timing diagram is shown below.
WAKE Timing Diagram
Battery Installation Detection
RT5002 also detect TS voltage to judge the battery
installation status. If PMU is enabled but TS voltage >
90% of VP node voltage, RT5002 would set the bit NoBAT
= 1 in I
2C register bank 0x2.
End_Of_Charge (EOC) Status
The bit EOC in I
2C register bank 0x2 can show the EOC
status. If EOC = 1, the Charger is in EOC State.
Suspend Mode
Set USUS = 1, and the charge will enter Suspend Mode.
In Suspend Mode, IUSUS (MAX) < 300
µA.
Battery Sense
When PMU is turned on, BATS = 59.8% x BAT, The
RT5002 detects the battery level from BATS voltage level.
Interrupt Indicator
The RT5002 provides the interrupt indicator output pin (INT).
INT is an open drain pin.
When the status bits (PGOOD, TS_FAULT, EOC, SAFE)
of I
2C register address 0x2 toggle, the INT is set to be
low. After Reg 0x2 is read or PMU turn off, INT goes high.
4
±0.4ms
BATS
VOUT2
VIN
WAKE
BAT
55ms
55ms
3.3V
2.7V



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